Perhaps you should try some spelling variations:
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve chat » va chat, van chat
truc va » thuc va, thuc vat, trung va
luy tre » luyen tre
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su sach v nang xa hoi. hieu ve chat ((duc va) or (truc va)) hanh vi ((luu tru) or (luy tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach v nang xa hoi. hieu ve chat ((duc va) OR (truc va)) hanh vi ((luu tru) OR (luy tre)).
• Adding a wildcard symbol may retrieve word variants: su sach v nang xa hoi. hieu ve chat ((duc va) or (truc va)) hanh vi ((luu tru) or (luy tre))*.